Which is prohibited in polling locations in Georgia. That is why they were asked to leave. You can wear costumes to vote as long as they don't constitute electioneering. The definition of electioneering can be fairly broad however. Wearing a black lives matter tshirt, for instance, has been considered electioneering.
It varies by state, but the simple answer is yes, the same would be true. Neither hypothetical tshirt is likely to lead to allegations of electioneering today given the slogans are no longer central in political discourse.